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Customers experiencing technical difficulty with their internet cable hookup may call an 800 number for technical support. It takes the technician between 30 seconds and 10 minutes to solve the prob
Write the elements of sample space S using letters G and D for good and defective respectively. Find probability repair shop purchased more than 2 defective hard drives?
you are chosing between two monthly long distance phone plans offered by two different companies. Company A charges $0.05 per minute for in state calls, $0.12 per minute for state to state calls, a
Does problem involve independent or dependent samples? Describe. Draw normal curve indicating positions of critical value, critical region, and test statistic.
Test hypothesis that exercises enhanced peripheral vision. Use 5% significance level. Are the samples dependent or independent? Describe your choice.
Assume you've the functions f(x) = x^2 and g(x) = 2^x both with domain x ≥ 0. Which function will increase faster on this domain? Why?
Apply the ideas of questioning the data (namely, examining the sources of data to evaluate their representativeness and quality) to newspaper and magazines that you read. This is a good course-long
1. What is the population, parameter, sample, statistic, and type of data for a given research study? 2. What three facets of a data set are essential in its presentation?
Show that limiting value R of residual concentrations for doses of Q mg/ml repeated at intervals of T hr is given by formula R = (-ln)(kT/1-eQ).
One can compute 95% confidence interval for mean with population standard deviation known. This will provide us the upper and lower confidence limit.
An unnoticed mechanical failure has caused one-fourth of a machine shop's production of 10,000 pistol firing pins to be defective.
That the hypothesis that no increase in average salary occurred during the 2-year period at the 0.05 level of significance. Assume σ = $3900. Use the four step process for Hypothesis Testing.
The gestation period of gray squirrels in captivity is listed as 44 days. It is recognized that potential life span of animals is rarely attained in nature, but gestation period could be either shor
A trough is 10ft long and its ends have the shape of isoceles triangles that are 3ft across at the top and have a height of 1ft. Suppose the trough is being filled with water at a rate of 12ft3/min.
A small warehouse has extra space wants to rent storage cages made out of fencing. To make the cages the warehouse manager wants to use 500ft of fencing material to enclose a large rectangle and the
Integrate both sides of previous differential equation from 0 to 10 to get the total production of widgets in the first 10 weeks of production. Suppose that at week 0 no widgets were produced.
Assume you were going to create your own study to examine what course-delivery format (online, blended, or face-to-face) leads to the best performance in a psychological statistics class.
Illustrate that limiting value R of residual concentrations for doses of Q mg/ml repeated at intervals of T hr is given by formula R = (-ln)(kT/1-eQ)
They sold 93 loaves in morning and 39 loaves in afternoon. Write the number line which can be used to determine how many loaves of bread they have left.
The survey involving 600 men and 400 women from township revealed that 300 of all people were smokers of which 220 were men.
A player makes plays on the machine repeatedly, hoping to get a return. Assuming that the outcomes of the plays are independent, what is the probability that it takes at least three plays for the pl
Rewrite each confidence interval in terms of percents rather than proportions. Does conclusion remain same? Describe.
Each participant in study was asked to answer questions about previous life experiences and exposures. Find out whether or not each of following terms applies to the observational study.
What kind of study is found-observational or randomized experiment? Describe. Are either of terms retrospective study or prospective study relevant? Describe.
Briefly explain (suggested length of 2-3 paragraphs) at least two mathematical strengths of each student whose response indicates the need to reteach the math content.